Oh no! Selena hit some serious sound issues while performing at Jingle Ball in Los Angeles on Dec. 6, and while her mic cut out and revealed that she was lip-syncing, it did NOT cut out when she yelled a profanity. Poor Selena!

It’s safe to say that KIIS FM Jingle Ball in LA on Dec. 6 did not go as Selena Gomezplanned. Not only was she caught lip-syncing, but the “Come & Get It” singer also alienated the 20,000 fans in attendance by dropping a very audible F-bomb.

Selena Gomez: Lip-Syncing & Cursing At Jingle Ball

The audio malfunctions started towards the end of Selena’s Jingle Ball set, an eyewitness tells HollywoodLife.com. It became clear that something was up when Selena ripped out her in-ear monitors (which allow performers to hear themselves sing) and tried to go on without them.

She couldn’t, unfortunately. Selena went from “visibly angry to verbally angry,” the eyewitness says, when her microphone went live — something that’s not supposed to happen if you’re lip-syncing — and she was then heard clearly yelling, “What the f**k?”

The painful, awkward incident got worse, and the eyewitness says that it began to resemble Ashlee Simpson‘s embarrassing lip-syncing incident on SNL — it was blatantly obvious that Selena was lip-syncing, and that she couldn’t go on with the show until her backing tracks were fixed. The stage went dark, and Selena briefly walked off.

When she came back, Selena apologized to the restless fans for what she called “sound issues,” and promised to play two more songs. But she couldn’t even make it that long, and after a rendition of “Come & Get It,” Selena ran off and stage and did not return.

Selena Gomez Lip-Syncs: Fans React On Twitter

It didn’t take long for Twitter to get a hold of Selena’s Jingle Ball debacle. Almost immediately, the social media site started buzzing with people laughing at the singer or feeling sympathy for her:

Artists usually get caught when they lip sync so idk why Selena decided to

In defense of Selena — everyone lip-syncs these days. EvenBeyonce. It’s very hard for a performer to dance complicated moves and also sing well, so they resort to lip-syncing. We just feel bad that Selena had to be exposed in such a public and painful way. If it makes you feel any better, Selena, you looked incredible in your vampy makeup and that red and black lace outfit.

What do you think, HollywoodLifers? Are you surprised Selena was lip-syncing? Do you think she mishandled her audio malfunction? Let us know!